/*
 * Copyright 2012 Finbudget.com
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package finbudgettable.client.ui.grid.filter;

import java.util.HashMap;
import java.util.Map;

public class FilterResolverRepository {
    private static final Map<Class<? extends Filter>, FilterResolver<?>> resolvers = new HashMap<Class<? extends Filter>, FilterResolver<?>>();

    public static <T extends Filter> void put(Class<T> filterClass, FilterResolver<T> resolver) {
        resolvers.put(filterClass, resolver);
    }

    @SuppressWarnings("unchecked")
	public static String resolve(Filter filter) {
        @SuppressWarnings("rawtypes")
		FilterResolver resolver = resolvers.get(filter.getClass());
        if (resolver != null) {
            return resolver.resolve(filter);
        }
        return null;
    }
}
